| Value | Category |
|---|---|
| 1 | Simple puzzles |
| 2 | Teaching them the difference between hot and cold objects |
| 3 | Teaching them the difference between near and far voices |
| 4 | Teaching them the difference between rough and smooth surfaces |
| 5 | Games to improve memory |
| 88 | Other (specify:) |
| 98 | Don?t know |
| Sysmiss |